Electronic Voltage Transformer (EVT)

Electronic voltage transformers with capacitive divider (EVTCD) is an alternative to the conventional capacitive voltage transformer (CVT) for high-precision voltage measurement and power quality control, between 72.5 kV to several hundreds of kV on HV overhead power lines. This innovative capacitor divider, developed in conjunction with selected customers, is characterized by a low voltage output (3.5 V to 100 V) with a simple connection permitting a direct digital treatment of the signal, a very high stability over a large temperature range, and optimal performances over an increased frequency bandwidth compared to conventional measurement methods.

Maxwell’s EVTCD can be delivered as an internal part ready to be installed in a composite or porcelain insulator by the customer. Dividers directly in a composite or porcelain insulator with single or alternating long-short sheds in full compliance with IEC 61815 are also available on demand.